Pile construction



Nov. 12, 1935. K. NOLTE 2,020,795

' PILE CONSTRUCTION Filed March 15, 1954 ,2 Sheets-Sheet 1 Nov. 12,1935. K. NOLTE PILE CONSTRUCTION Filed March 15, 1934 2 Sheets-Sheet 2III/111111114 IIIIIIIIIII,

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Patented Nov. 12, 1935 PATENT OFFICE PILE CONSTRUCTION Karl Nolte,Dortmund, Germany, assignor to Dortmund-Herder HiittenvereinAktiengesell schaft, Dortmund, Germany Application March 15,

1934, Serial No. 715,580

In Germany March 21, 1933 3 Claims.

Walls formed of piles of I- or H-section are known in which the flangesof the piles are connected together by I-shaped locking members insertedbetween the ends of the flanges that r have been suitably thickened toreceive them. So long as straight walls or curves of large radius are tobe produced, no special difficulties are involved. The diflicultiesencountered are, however, great when a circular or similar wall is to beproduced from such sections, particularly if the radius is very small.To avoid such diificulties it has been proposed to arranged so-calledcompensating members on the inside and on the outside, the compensationbeing made either 15 after each pile or after every second pile. Suchcompensating members have however great disadvantages as they are likelyto increase the difficulty of ramming to such an extent that it is notpossible to retain the circular or curved formation.

According to the invention these difiiculties are avoided in very simplemanner by omitting the locking connections on one side of the wall andby completely or partly bending or curving back the free flanges thusproduced; the free flanges altogether or alternately-may be partly orcompletely bent or curved back outwardly or inwardly, and at one end orat both ends. Apart from the fact that by this means it is possible todispense with the compensating members it has been found that theabsence of the locking connections on the inside of the curves involvesno disadvantage but on the contrary is an advantage.

35 The accompanying drawings show several examples of pile constructionaccording to the invention in cross-section.

Figures 1 to 10 show diagrammatically the circular formation, which isillustrated for the sake 40 of clarity with an exceedingly small radius,while Figures 11 to 13 show three constructions with the detailsenlarged.

According to Figure 1 of the drawings, a section of the curved pile wallis made up of two girders a and b of different shapes, which at c areprovided with looking conections, whereby they are held together. Indimensions the I- or H-sections are all alike except that the I- orH-section b is produced from an I- or H-section a by providing theflange d at an inclination to the web e, which operation involves littledifflculty. It is furthermore possible to produce the curve solely fromI- or H-sections such as b, the advantage of which is that the angleformed 5 by the flange d and the web e is smaller.

In Figure 3 the flanges of each second I- or H-section h. are bentinwardly.

Figure 4 shows I- or H-sections g alternating with I- or H-sections h,the flanges being bent alternately inwardly and outwardly.

Figure 5 is similar to Figure 4 except that only the ends of the flangesare bent.

Figures 6 to 10 correspond to Figures 1 to 5 except that thesharp-bent-back portions are formed as curves.

Figure 11 illustrates on an enlarged scale a section of the wall asshown in Figure 1. The I- or H-sections a are in this case connected tothe I- or H-sections b by I-shaped locking members 1 provided on theoutside of the curve and inserted between the thickened ends of theflanges.

Figure 12 illustrates a section on an enlarged scale of the pile wallillustrated in Figure 4, while Figure 13 is a similar view of a sectionof the pile wall illustrated in Figure 10.

I claim:

1. A curved pile wall made up of I- or H- sections, which are heldtogether by locking members on the outer side only of the curve,characterized in that the free flanges of the I- or H-sections on theinside of the curve have their adjacent edges overlapping and offsetwith relation to each other so that they do not impede each other in theramming operation.

2. A curved pile wall made up of I- or H-sections, which are heldtogether by locking members on the outer side of the curve,characterized in that the flanges of the alternate pairs of I- orH-sections are inclined, bent or curved in the inward and outwarddirections respectively.

3. A curved pile wall made up of I- or H-sections, which are heldtogether by locking members on the outer side of the curve,characterized 45 in that one flange of alternate I- or H-section isinclined, bent or curved inwardly and the other flange outwardly.

KARL NOLTE.

